president obama's handling of libya in the wake of the killings of the u.s. diplomats but when one heckler interrupted the former governor today, he abruptly canceled a moment of silence that he had planned. republican presidential candidate mitt romney's bus was met by cheering supporters in a park in the city of fairfax. but the event quickly faced a detour. >> northern virginia could well determine who the next president is. and i hope you make that decision to get me elected. >> reporter: romney said he would start the rally with a moment of silence for chris stevens and three others killed in libya. but did not, after being heckled. >> it is a tragedy to lose such a wonderful. [ overlapping speakers ] -- >> wonderful people that have been so wonderful and appreciate their service for the country. >> reporter: a man in the crowd yelled at the governor, accusing him of politicizing the libyan killings and demanding that romney apologize. the man was shouted down by the crowd and quickly removed. >> i would offer a moment of silence but one gentleman doesn'